Preview of This Week's Episodes of 'The Biggest Loser: Couples'
This week, The Biggest Loser will be split into two parts. The first part will air tonight, February 24th at 8pm and the second will air tomorrow, Wednesday February 25th at 8pm due to Obama's address to the nation slated to start at 9pm Eastern.

This week, there's a huge shake up on The Biggest Loser ranch.

Beware of possible spoilers below:

According to NBC's official press release, teams will be rearranged this week. Check out the press release for tonight's episode.:

CONTESTANTS GET UNEXPECTED SHAKE-UP WHEN TEAMS ARE RE-ORGANIZED -- This week brings a shake-up no one sees coming when all of the contestants are divided into just two teams – blue and black – leaving many players without their original trainer. Drama ensues, especially with one team who struggles to get used to their new trainer. And contestants are put to the test with one of the longest challenges ever, in which each team tries to put as many miles as they can on their bike in a 24-hour period. Alison Sweeney hosts the series, and Bob Harper and Jillian Michaels also star.

I'm not sure what all the mud is about in the picture above, but I'm sure it'll be entertaining.

Then on Wednesday night, the weigh-in will send someone else home. Check out the official preview for Wednesday's episode:

CONTESTANTS GET POP QUIZ ON HEALTH AND AGING -- In part two of this week’s two-part episode, the contestants continue to adjust to their newly formed blue and black teams. They also meet Prevention Magazine editor Liz Vaccariello and take a pop quiz about health and aging. Then it’s a grueling last chance workout leading up to weigh-in, after which another player is sent packing. Alison Sweeney hosts the series, and Bob Harper and Jillian Michaels also star.

Be sure to check back tonight and tomorrow for the recaps and then on Thursday for an exclusive interview with the booted contestant.

-Kim Wetter, BuddyTV Staff Columnist
(Image Courtesy of NBC)